Untersuchungen zum Energieerhaltungsbedarf wachsender Schweine verschiedenen Geschlechts bei normalen und hohen Proteingaben

Abstract

In connection with experiments for the ascertainment of energy and nutrient metabolization in castrated pigs, sows and boars over the complete fattening period and with alternating maintenance and growth feeding as well as the inclusion of an extreme protein supply level, blood parameters were studied of 3 animals per variant in order to recognize possible deviations in the metabolism and to be able to better assess the results of the measurements of energy metabolism. The results of the determination of the content of glucose, insulin, ketoses, ammonia, urea and amino acids in the blood are announced, the results of glucose elimination contained in the intravenous glucose tolerance test are depicted as tolerance curves. As a result, there was to be seen, arranged according to animal categories, a ranking of the glucose elimination rate of castrated pigs greater than sows greater than boars. The same sequence was observed with regard to insulin secretion, which corresponds to the blood sugar level. On the whole, the results of the blood tests do not show critical states of the metabolism hat can lead to an influentiation of energy metabolism.